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Old 02-09-2012, 08:48 AM   #1
I wonder . . .
Join Date: Oct 2006
Location: The Left Coast, a pretty good place to be.
Posts: 1,278
February 8, 2012 Perspective

Hidden in rugged Phong Nha-Ke Bang National Park near the border with Laos, is
Hang En
, a cave tunneled out by the Rao Thuong River, Vietnam. It is a mile-long portal that tunnels beneath a ring of mountains into the lost world of a network of 150 or so caves in the Annamite Mountains.

From the National Geographic story Conquering an Infinite Cave
Photograph by Carsten Peter

There I go, time travelin' again.
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